using System;

namespace Welcome
{
	/// <summary>
	/// Summary description for DrawDemo.
	/// </summary>
	public class DrawDemo
	{
		public DrawDemo()
		{
			//
			// TODO: Add constructor logic here
			//
		}

		public static void Main()
		{
			DrawingObject[] drObj = new DrawingObject[4];

			drObj[0] = new Line();
			drObj[1] = new Circle();
			drObj[2] = new Square();
			drObj[3] = new DrawingObject();

			foreach(DrawingObject actual in drObj)
			{
				actual.draw();
			}
			Console.ReadLine();
		}
	}
}
